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vuln-cve/data/2024/21xxx/CVE-2024-21616.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"cveMetadata": {
"cveId": "CVE-2024-21616",
"assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
"state": "PUBLISHED",
"assignerShortName": "juniper",
"dateReserved": "2023-12-27T19:38:25.710Z",
"datePublished": "2024-01-12T00:56:20.566Z",
"dateUpdated": "2025-06-17T14:43:11.964Z"
},
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"platforms": [
"MX Series",
"SRX Series"
],
"product": "Junos OS",
"vendor": "Juniper Networks",
"versions": [
{
"lessThan": "21.2R3-S6",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "21.3R3-S5",
"status": "affected",
"version": "21.3",
"versionType": "semver"
},
{
"lessThan": "21.4R3-S5",
"status": "affected",
"version": "21.4",
"versionType": "semver"
},
{
"lessThan": "22.1R3-S4",
"status": "affected",
"version": "22.1",
"versionType": "semver"
},
{
"lessThan": "22.2R3-S3",
"status": "affected",
"version": "22.2",
"versionType": "semver"
},
{
"lessThan": "22.3R3-S1",
"status": "affected",
"version": "22.3",
"versionType": "semver"
},
{
"lessThan": "22.4R2-S2, 22.4R3",
"status": "affected",
"version": "22.4",
"versionType": "semver"
},
{
"lessThan": "23.2R1-S1, 23.2R2",
"status": "affected",
"version": "23.2",
"versionType": "semver"
}
]
}
],
"configurations": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "<p>To be affected the SIP ALG needs to be enabled, either implicitly / by default or by way of configuration.</p><p>Please verify on SRX with:</p><code> user@host&gt; show security alg status | match sip</code><br/><code> SIP : Enabled</code><br/><p>Please verify on MX whether the following is configured:</p><code> user@host&gt; show security alg status | match sip</code><br/><code> SIP : Enabled</code><br/><code> [services ... rule &lt;rule-name&gt; (term &lt;term-name&gt; ) from/match application/application-set &lt;name&gt;]</code><br/><p>where either</p><code> a. name = junos-sip</code><br/><p>or an application or application-set refers to SIP:</p><code> b. [applications application &lt;name&gt; application-protocol sip]</code><br/><p>or</p><code> c. [applications application-set &lt;name&gt; application junos-sip]</code><br/>"
}
],
"value": "To be affected the SIP ALG needs to be enabled, either implicitly / by default or by way of configuration.\n\nPlease verify on SRX with:\n\n user@host> show security alg status | match sip\n SIP : Enabled\nPlease verify on MX whether the following is configured:\n\n user@host> show security alg status | match sip\n SIP : Enabled\n [services ... rule <rule-name> (term <term-name> ) from/match application/application-set <name>]\nwhere either\n\n a. name = junos-sip\nor an application or application-set refers to SIP:\n\n b. [applications application <name> application-protocol sip]\nor\n\n c. [applications application-set <name> application junos-sip]\n"
}
],
"datePublic": "2024-01-10T17:00:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\n\n<p>An Improper Validation of Syntactic Correctness of Input vulnerability in Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause Denial of Service (DoS).</p><p>On all Junos OS MX Series and SRX Series platforms, when SIP ALG is enabled, and a specific SIP packet is received and processed, NAT IP allocation fails for genuine traffic, which causes Denial of Service (DoS). Continuous receipt of this specific SIP ALG packet will cause a sustained DoS condition.</p><p>NAT IP usage can be monitored by running the following command.</p><code>user@srx&gt; show security nat resource-usage source-pool &lt;source_pool_name&gt;</code><br><p></p><code>Pool name: source_pool_name</code><br><code>..</code><br><code>Address Factor-index Port-range Used Avail Total Usage</code><br><code>X.X.X.X</code><br><code>0 Single Ports 50258 52342 62464 96% &lt;&lt;&lt;&lt;&lt;</code><br><code>- Alg Ports 0 2048 2048 0%</code><br><p>This issue affects:</p><p>Juniper Networks Junos OS on MX Series and SRX Series</p><p></p><ul><li>All versions earlier than 21.2R3-S6;</li><li>21.3 versions earlier than 21.3R3-S5;</li><li>21.4 versions earlier than 21.4R3-S5;</li><li>22.1 versions earlier than 22.1R3-S4;</li><li>22.2 versions earlier than 22.2R3-S3;</li><li>22.3 versions earlier than 22.3R3-S1;</li><li>22.4 versions earlier than 22.4R2-S2, 22.4R3;</li><li>23.2 versions earlier than 23.2R1-S1, 23.2R2.</li></ul><p></p>\n\n"
}
],
"value": "\nAn Improper Validation of Syntactic Correctness of Input vulnerability in Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause Denial of Service (DoS).\n\nOn all Junos OS MX Series and SRX Series platforms, when SIP ALG is enabled, and a specific SIP packet is received and processed, NAT IP allocation fails for genuine traffic, which causes Denial of Service (DoS). Continuous receipt of this specific SIP ALG packet will cause a sustained DoS condition.\n\nNAT IP usage can be monitored by running the following command.\n\nuser@srx> show security nat resource-usage source-pool <source_pool_name>\n\n\nPool name: source_pool_name\n..\nAddress Factor-index Port-range Used Avail Total Usage\nX.X.X.X\n0 Single Ports 50258 52342 62464 96% <<<<<\n- Alg Ports 0 2048 2048 0%\nThis issue affects:\n\nJuniper Networks Junos OS on MX Series and SRX Series\n\n\n\n * All versions earlier than 21.2R3-S6;\n * 21.3 versions earlier than 21.3R3-S5;\n * 21.4 versions earlier than 21.4R3-S5;\n * 22.1 versions earlier than 22.1R3-S4;\n * 22.2 versions earlier than 22.2R3-S3;\n * 22.3 versions earlier than 22.3R3-S1;\n * 22.4 versions earlier than 22.4R2-S2, 22.4R3;\n * 23.2 versions earlier than 23.2R1-S1, 23.2R2.\n\n\n\n\n\n\n"
}
],
"exploits": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "<p>Juniper SIRT is not aware of any malicious exploitation of this vulnerability.</p>"
}
],
"value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability.\n\n"
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-1286",
"description": "CWE-1286: Improper Validation of Syntactic Correctness of Input",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"description": "Denial of Service (DoS)",
"lang": "en"
}
]
}
],
"providerMetadata": {
"orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
"shortName": "juniper",
"dateUpdated": "2024-01-12T00:56:20.566Z"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://supportportal.juniper.net/JSA75757"
},
{
"tags": [
"technical-description"
],
"url": "https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
}
],
"solutions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "<p>The following software releases have been updated to resolve this specific issue: Junos OS 21.2R3-S6, 21.3R3-S5, 21.4R3-S5, 22.1R3-S4, 22.2R3-S3, 22.3R3-S1, 22.4R2-S2, 22.4R3, 23.2R1-S1, 23.2R2, 23.4R1, and all subsequent releases.</p>"
}
],
"value": "The following software releases have been updated to resolve this specific issue: Junos OS 21.2R3-S6, 21.3R3-S5, 21.4R3-S5, 22.1R3-S4, 22.2R3-S3, 22.3R3-S1, 22.4R2-S2, 22.4R3, 23.2R1-S1, 23.2R2, 23.4R1, and all subsequent releases.\n\n"
}
],
"source": {
"advisory": "JSA75757",
"defect": [
"1702811"
],
"discovery": "USER"
},
"timeline": [
{
"lang": "en",
"time": "2024-01-10T17:00:00.000Z",
"value": "Initial Publication"
}
],
"title": "Junos OS: MX Series and SRX Series: Processing of a specific SIP packet causes NAT IP allocation to fail",
"workarounds": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "<p>There are no known workarounds for this issue, but it should be considered to disable the SIP ALG if it's not strictly needed.</p>"
}
],
"value": "There are no known workarounds for this issue, but it should be considered to disable the SIP ALG if it's not strictly needed.\n\n"
}
],
"x_generator": {
"engine": "Vulnogram 0.1.0-av217"
}
},
"adp": [
{
"providerMetadata": {
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE",
"dateUpdated": "2024-08-01T22:27:35.547Z"
},
"title": "CVE Program Container",
"references": [
{
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://supportportal.juniper.net/JSA75757"
},
{
"tags": [
"technical-description",
"x_transferred"
],
"url": "https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
}
]
},
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2024-02-08T20:39:11.105269Z",
"id": "CVE-2024-21616",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2025-06-17T14:43:11.964Z"
}
}
]
}
}
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